CN2158737Y

CN2158737Y - Locking device

Info

Publication number: CN2158737Y
Application number: CN 93216885
Authority: CN
Inventors: 张志明; 张保银; ***
Original assignee: 张志明
Priority date: 1993-06-28
Filing date: 1993-06-28
Publication date: 1994-03-16
Anticipated expiration: 2003-06-28

Abstract

The utility model provides a clamp locking device. A locking hand wheel is screwed in a thread hole section of a locking jacket on which a bell sheet tightening nut which can be crowded with a bar bell sheet is screwed. A ring groove of the screwing section between the locking hand wheel and the locking jacket is movably clamped with a locking block. The locking block is composed of a plurality of fan-shaped plates and springs sheathed between every two plates. The locking block can be pushed in or pulled out along an axial direction when the locking hand wheel is screwed. When pushed, the cone section of each arc plate of the locking block is collected and pulled to form a cone circle along a radial direction under the action of a taper hole corresponding to the locking jacket, and the cone circle is tightly clamped with a sleeve barrel. When pulled out, each plate is flicked under the function of the spring, and is disengaged from the sleeve barrel.

Description

Locking device

The utility model relates to a kind of sports apparatus, particularly a kind of cohesion style locker of the disc position that is used to lock.

The barbell that weight lifting and body-building are used mainly by bar, sleeve, be sleeved on the sleeve and the disc of the increase and decrease at any time and locker of disc axial location constituted, because all parts all are to bear great shock loading and strong frequent vibrations on the barbell, therefore, to its intensity, especially security insurance all requires very high, for the axial slip that prevents disc in use and the weight that causes is unbalance and along quill to skidding off, all to locker be set in the axle side of disc.

The structure of present locker has two kinds, and a kind of is to be screwed a rotating elbow screw on a collar, by locking against realization of screw and sleeve, because the locking face of screw has only a point, add and shaken easily loosening shortcoming, therefore, its locking effect is relatively poor, and is also dangerous.

Another kind of locker is to be made of two semicircle cutting ferrules and the spring that is connected between two cutting ferrules, during use, with two groups of screws the gathering of two semicircles cover is tightened, rely on holding tightly of semicircle cutting ferrule and sleeve to realize locking, unclamping screw two halves cover can be at distending under the spring action.Its shortcoming is, because the two halves cover is the metal smooth body with sleeve, easily axially scurries and moves so frictional force is less, and it is cumbersome that another shortcoming just is to use, and the locking degree is difficult for grasp.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of existing in prior technology, and provides a kind of locking that separates cohesion style safe and reliable, and frictional force is big, easy to operate cohesion style locker.

The purpose of this utility model is to realize by following technical scheme:

In the screwed hole section of locking jacket, be screwed a locking handwheel, being screwed one on locking jacket can be tightly female with the disc that disc is close to mutually, active card is equipped with latch segment in the annular groove of the section of screwing of locking handwheel and locking jacket, latch segment is to be made of the spring that the fan-shaped plate of several piece and each utmost point interblock are nested with, latch segment can be pushed into or pull out when the locking handwheel is screwed vertically, when pushing, the conical section of each arc plate of latch segment is then radially received under the effect of the corresponding taper hole of locking jacket and pulled out to be a taper circle and to hold tightly with sleeve, when pulling out, each plate flicks under spring action and breaks away from sleeve.

Therefore remarkable result of the present utility model is:

First, Cheng Yiyuan overlaps and holds tightly with the comprehensive engagement of sleeve contact-segment cylindrical owing to piece together after latch segment closes up, has bigger rubbing action area, adding each arc plate inner arc side adhesion has the plastic cement frictional layer, therefore, locks very reliable, because, frictional layer both can increase frictional force, can play again to prevent the effect of dashing that slows down of the stressed bullet when outer sliding of disc, also can prevent the damage to sleeve surface.So, during use, fool proof reliable.

Second, the ingenious design of locking jacket internal taper hole and latch segment conical section, not only reached and made latch segment draw the effect of holding tightly gradually in, and, can guarantee the uniformity of all contact-making surface coupling mechanism forces, especially in the locking process, can rely on the size of locking handwheel rotational resistance torque accurately to judge the locking degree.

The 3rd, the tight mother of disc also has the effect of secondary pretension vertically after locking jacket axle side and disc closing, can guarantee to fit tightly between disc itself and the phase disc, so disc can not rock or produce contact noise.

The 4th, easy and simple to handle.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing thereof:

Fig. 1 is a section of structure of the present utility model.

Fig. 2 is the A-A profile of Fig. 1.

Be described in detail below in conjunction with 1～2 pair of concrete structure of the present utility model of accompanying drawing:

In the internal thread hole section 11 of locking jacket 1, be screwed a locking handwheel 4, corresponding with internal thread hole section 11 is the taper hole 12 of locking jacket 1, active card is equipped with latch segment 2 in endoporus 43 annular groove 42 radially of locking handwheel 4, latch segment 2 is to be made of with the spring 21 that is mounted in each adjacent locking plate 23 corresponding surface several piece locking plate 23, each inner segment periphery of locking plate 23 all has the conical surface section identical with taper hole 12 taperings 22 and all is arranged in taper hole 12, and cover is screwed with the disc that leans with the disc side tight female 3 on locking jacket 1 medial segment cylindrical.Referring to Fig. 1 and Fig. 2

Locking jacket 1 cylindrical is stairstepping, cover is screwed with disc tight female 3 on reduced diameter section, corresponding with reduced diameter section is that an outer end is little, inner big taper hole 12, the longitudinal section of respectively locking plate 23 of latch segment 2 is fan-shaped, cross section after closing up has a circular inner hole and a conical surface section 22, all have counterbore 231 in each adjacent latch segment 23 respective side, be set with spring 21 231 of corresponding counterbores, each is locked the axial outside of plate 23 and all goes up a protruding fixture block 24 along the footpath, fixture block 24 equal active card are contained in the annular groove 42 of locking handwheel 4, the locking handwheel 4 outer coarse turning handles 41 of Duan Weiyi of visiting have frictional layer 25 in each intrados adhesion of locking plate 23.Referring to Fig. 1 and Fig. 2

The sticking plastic layer 31 that is surrounded by of tight female 3 peripheries of disc, the sticking plastic layer 131 that is surrounded by of enlarged diameter section 13 peripheries of section outside locking jacket 1, latch segment 2 is to be constituted and supportted empty boastings by spring 21 by 3 to 5 locking plate 23 assembly groups to be contained in the taper hole 12 and Qian shape annular groove 42 of locking jacket 1, each inside and outside anchor ring 241 of fan-shaped fixture block 24 of locking the axle side outer end of plate 23 contacts with the inside and outside anchor ring 421 of annular groove 42 or breaks away from, stick in plastic cement frictional layer 25 cross sections of respectively locking plate 23 intrados sides be in the arrow shaped of flat evagination.Referring to Fig. 1 and Fig. 2

Operation principle of the present utility model is as follows: referring to Fig. 1

After disc all is housed on the bar sleeve, then locker is inserted in sleeve and is resisted against the disc outside, rotate the outer turning handle of visiting 41 then, locking handwheel 4 is screwed in along locking jacket 1 screwed hole, when locking handwheel 4 screws in, the outer ring surface 241 of the fixture block 24 of plate 23 is respectively locked in 421 continuous ejections simultaneously vertically of the outer ring surface of annular groove 42, make and lock respectively that plate 23 moves inward vertically and under taper hole 12 effects, radially close up contraction, till the conical surface section 22 of each locking plate 23 holds out against with taper hole 12, at this moment, each plate gathering is merged to one and tightly embraces and entangle sleeve, to reach the purpose of locking disc, at last, the tighter mother 3 of disc is pushed up to disc one sidespin, be close to vertically to make disc once more.When unclamping, earlier locking handwheel 4 is oppositely screwed, can with the locking plate 23 of each gathering vertically drawstring outwards move, when outside axially, moving, each locks the obvolvent of plate radially outer automatically bloated and disengaging and sleeve under spring 21 effect, and at this moment, locker can integral body withdraw from.

Claims

1, the cohesion style locker, it is characterized in that: in the internal thread hole section (11) of locking jacket (1), be screwed a locking handwheel (4), corresponding with internal thread hole section (11) is the taper hole (12) of locking jacket 1, active card is equipped with latch segment (2) in endoporus (43) annular groove (42) radially of locking handwheel (4), latch segment (2) is by several piece locking plate (23) and is mounted on spring (21) formation in each adjacent locking plate (23) corresponding surface, each inner segment periphery of locking plate (23) all has the conical surface section (22) identical with taper hole (12) tapering and all is arranged in taper hole (12), and cover is screwed with the disc that leans with the disc side tight female (3) on locking jacket (1) medial segment cylindrical.

2, according to the described cohesion style locker of claim 1, it is characterized in that: locking jacket (1) cylindrical is stairstepping, cover is screwed with disc tight female (3) on reduced diameter section, corresponding with reduced diameter section is that an outer end is little, inner big taper hole (12), the longitudinal section of respectively locking plate (23) of latch segment (2) is fan-shaped, cross section after closing up has a circular inner hole and a conical surface section (22), all have counterbore (231) in each adjacent latch segment (23) respective side, between corresponding counterbore (231), be set with spring (21), each is locked the axial outside of plate (23) and all goes up a protruding fixture block (24) along the footpath, fixture block (24) all active card is contained in the annular groove (42) of locking handwheel (4), the outer coarse turning handle of Duan Weiyi (41) of visiting of locking handwheel (4) has frictional layer 25 in each intrados adhesion of locking plate (23).

3, according to claim 1 or 2 described cohesion style lockers, it is characterized in that: the sticking plastic layer (31) that is surrounded by of tight female (3) periphery of disc, the sticking plastic layer (131) that is surrounded by of enlarged diameter section (13) periphery of section outside locking jacket (1), latch segment (2) is to be constituted and supportted empty boasting by spring (21) by (3) to (5) piece locking plate (23) assembly group to be contained in the taper hole (12) and Qian shape annular groove (42) of locking jacket (1), each inside and outside anchor ring (241) of fan-shaped fixture block (24) of locking the axle side outer end of plate (23) contacts with the inside and outside anchor ring (421) of annular groove (42) or breaks away from, stick in plastic cement frictional layer (25) cross section of respectively locking plate (23) intrados side be in the arrow shaped of flat evagination.